Comparison of Different Histone Deacetylase Inhibitors in Attenuating Inflammatory Pain in Rats.

Comparison of Different Histone Deacetylase Inhibitors in Attenuating Inflammatory Pain in Rats. Pain Res Manag. 2019;2019:1648919 Authors: Mao Y, Zhou J, Liu X, Gu E, Zhang Z, Tao W Abstract Histone deacetylase inhibitors (HDACIs), which interfere with the epigenetic process of histone acetylation, have shown analgesic effects in animal models of persistent pain. The HDAC family comprises 18 genes; however, the different effects of distinct classes of HDACIs on pain relief remain unclear. The aim of this study was to determine the efficacy of these HDACIs on attenuating thermal hyperalgesia in persistent inflammatory pain. Persistent inflammatory pain was induced by injecting Complete Freund's Adjuvant (CFA) into the left hind paw of rats. Then, HDACIs targeting class I (entinostat (MS-275)) and class IIa (sodium butyrate, valproic acid (VPA), and 4-phenylbutyric acid (4-PBA)), or class II (suberoylanilide hydoxamic acid (SAHA), trichostatin A (TSA), and dacinostat (LAQ824)) were administered intraperitoneally once daily for 3 or 4 days. We found that the injection of SAHA once a day for 3 days significantly attenuated CFA-induced thermal hyperalgesia from day 4 and lasted 7 days. In comparison with SAHA, suppression of hyperalgesia by 4-PBA peaked on day 2, whereas that by MS-275 occurred on days 5 and 6. Fatigue was a serious side effect seen with MS-275. These findings will be beneficial for optimizing the selection of specific HDACIs in medical fiel...
Source: Pain Research and Management - Category: Anesthesiology Authors: Tags: Pain Res Manag Source Type: research

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Source: Trials - Category: Research Source Type: clinical trials
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Source: Kevin, M.D. - Medical Weblog - Category: General Medicine Authors: Tags: Meds Pain Management Source Type: blogs
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Source: The Spine Journal - Category: Orthopaedics Authors: Source Type: research
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